Alfalfa-harrow.



E. P. PRICE.

ALPALPA I-[Amzovvt APPLICATION FILED 00T. 18, 1909.

942,5 1 `6, Patented Dec. '7, 1909.

Witnesses Fig. 2 is ASSIGNOR TO THE OI-IIO MANUFACTUR- A CORPORATION OFOHIO.

EDWIN F. PRICE, 0F UPPER SANDUSKY, OHIO,

ING COMPANY, OF UPPER SANDUSKY, OHIO,

ALFALFA-I-IARROW.

Specification of Letters Patent.

Patented Dec. *7, 1909.

Application filed October 18, 1909. Serial No. 523,119.

d is such that they fit snugly within the sockets 3 and each tooth isprovided near its inner end with a transverse groove 5 which ispreferably curved to conform to the are of a circle described from thecenter of the disk. rPhe inner erably project beyond the inner edge orthe annular enlargement 2 of the body portion of the disk and thegrooves 5 are foi-med in those portions of the teeth which projectbeyond said enlargement. The body portion l of the disk has a squaredopening 6 arranged centrally thereof and adapted to receive the gangbolt 7 which is of ordinary construction, upon which the several disksare mounted and upon which they are spaced apart suitable distances andretained in their respective positions by means of spacing sleeves orspools 8.

rlhe .second portion of the disk consists of a clamping plate 9 which isof such a size and shape as to lit within the annular enlargement 2 ofthe body portion of the disk and is provided with a central opening 10to permit the same to be mounted on the gangbolt 7. rlhe inner face ofthe clamping plate is cut away near its outer edge to form an annularshoulder llagainst which the inner ends of the teeth a bear. rPhisclamping plate also has an annular rib l). arranged between the shoulder11 and the outer edge of the plate, this rib being of a size andcurvature to enable the same to tit within the recesses 5 of the severalteeth and thus securely lock the teeth against longitudinal movement andclamp the same against the side of the socket.

Each of the apertures or sockets formed in the annular enlargement Q ofthe body portion of the disk has its central portion hollowed out ornotched to form a cavity or cavities between the ends of said sockets.These cavities are adapted to receive blocks of wood or wedges 13 whichare inserted in the cavities before the tooth is placed in the socket.The tooth is then inserted in the socket and driven into place from theinside. The wedges thus grip the sides of the tooth and hold each toothin place until the other teeth have been inserted andthe clamping plate9 placed in position to permanently secure the teeth in the sockets.Further, these wooden wedges serve to prevent any To all 'whom it 'mayconcern.'

Be it known that l, EDWIN F. PRICE, a citizen of the United States,residing at Upper Sandusky, in the county of W yandot and State of Ohio,have invented certain new and useful improvements in Alfalfa- Harrows,of which the following is a speciication, reference beinghad therein tothe accompanying drawings.`

his invention relates to alfalfa harrows, and more particularly to thespike-toothed disks of which these narrows are built up.

rllhe object of the invention is to provide a disk of this character inwhich the teeth can be readily inserted and removed and in which theywill be rigidly held against movement in any direction after they havebeen inserted; to provide means for clamping the teeth in positionwithout the use of bolts; to provide means for retaining the teeth intheir respective positions while t'ne device is being assembled; and toprevent the rattling ot the teeth in the disks.

W ith these and other objects in view my invention consists in certainnovel features and in certain combinations and arrangements of partshereinafter to be described, and then more particularly pointed out inthe claims.

In the accompanying drawings, Figure l is a side elevation, partlybroken away, of a spike-toothed disk embodying my invention; a sectionalview, taken centrally disk; Fig. 3 is a transverse, taken on the line a:of Fig. is a detail view of one of the through such a sectional view, 2;and Fig. 4 teeth.

The harrow, of which this disk forms a part, is not a part of thepresent invention and is not here shown in its entirety as such ashowing is not necessaryto an understanding of the invention and theharrow is well known. As shown in these drawings, the disk comprises twoportions, a main or body portion 1, which is preferably concave and hason its convex side and near the outer edge thereof an annular projectionor enlargement 2 which is preferably cast integral with the body portionof the disk and has formed therein a series of openings or sockets 3arranged radially about the circumference of the disk and adapted toreceive the teeth 4:. The shape of the teeth side thereof and .having aseries of radially rattling of the tooth should it not fit snugly Withinits socket. In the present instance I have shown these Wedges arrangedon three sides of the tooth, but, obviously, the number and arrangementof ,the Wedges can, 'be varied.

The clamping plate 9 is secured to the body portion l of the disk bymeans of the spacing sleeves or spools 8, and, in order that thesespools may have a better clamping effect, I have enlarged the endsthereof adjacent to the disk. In the present instance this enlargementis semispherical in shape, as shown at 14, and of such a size as toengage the faces of the body portion of the diskv and of the clampingplate, respectively, at a considerable distance from the creasedclamping effect and serving to lock the clamping plate rigidly inposition.

It Will be understood that the spacing sleeves are caused to bearstrongly against the disk by assembling the same in the usual manner inwhich the nut on the end of the gang-bolt clamps the several spacinsleeves and their respective disks rigidly together, forming a compact,unitary structure.

It Will be apparent from the foregoing description that I have provideda spiketoothed disk Which is very simple in its construction, is easilyand quickly assembled, and, When assembled, the several parts thereofare rigidly connected together and this connection is formed Withoutbolts; and that means are provided both for holding having a projectionarranged near the edge thereof and adapted to engage the grooves in saidteeth, means for securing said clamping plate to said body portion, andspacing sleeves mounted on said ganobolt and adapted to engage the outerof said body plate, respectively.

In a harrovv of the character described, the combination, with agang-bolt, of a disk comprising a body portion mounted on saidgang-bolt, an annular projection arranged near the edge of said bodyportion on one L a series of radially a clamping plate mounted on saidgang-bolt the several teeth in their respective positions and aving aprojection arranged near the until the assembling of the device is com`edge thereof and adapted to engaOe the pleted and for preventing therattling' of the grooves in said teeth, means for securing' teeth intheir sockets. said clamping plate to said body portion,

I Wish it to be understood that I do not and spacing sleeves mounted onsaid gan desire to be limited to the details of conl' adapted to engagesaid body portion and said clamping plate, respec- Itjrely, at pointsremoved from said gang- 5. A disk of the character described comprisinga body portion, a laterally extending annular projection arranged on oneside thereof and having a series of radially arranged sockets, a seriesof teeth mounted in the respective sockets, extending beyond the innerends thereof and having transverse grooves in said projecting portions,a clamping plate adapted to lit Within said annular projection on saidbody portion and having I a rib near the edge thereof adapted to enplateto said gage the grooves in said teeth.

body portion. 6. A disk of the character described corn- 2. In a harrovvof the character described, prising a body portion having a laterallythe combination, With a gang-bolt, of a disk extending annularenlargement formed incomprising a body portion mounted on said j tegraltherewith and having a series of apgang-bolt, an annular projectionarranged ertures arranged therein, a series of teeth near the edge ofsaid body portion on one i mounted in the respective apertures, sidethereof and having a series of radially ,t jecting beyond the inner enlsthereof Having thus fully described my inven tion, what I claim as newand desire to secure by Letters Patent, is

1. In a harroW of the character described, a disk comprising a bodyportion, an annular projection arranged near the edge of said bodyportion and having a series therein, sockets and having transversegrooves near the inner ends thereof, a clamping plate having a rib nearthe edge thereof adapted to enter the grooves in said teeth, and meansfor securing said clamping iso having transverse grooves in saidprojecting portions, a clamping plate having a projection adapted toengage said grooves, and means for securing said clamping plate in itsclamping position.

7. A disk of the character described comprising a body portion having alaterally extending annular enlargement formed integral therewith andhaving a series of apertures arranged therein, a series of teeth mountedin the respective apertures, projecting beyond the inner ends thereofand having transverse grooves in said projecting portions, a clampingplate adapted to tit within said annular enlargement having a shoulderto engage the inner ends of said teeth, an annular rib to enter saidtransverse grooves, and means for securing said l clamping plate withinsaid annular enlargement.

8. A disk of the character described comprising a body portion having alaterally extending projection, an aperture formed in said projection,the wall of said aperture having a recess between the ends thereof, awedge mounted in said recess, a tooth mounted in said aperture andengaging said wedge, and a clamping plate adapted to engage said toothand retain the same within said socket.

In testimony whereof, l aiiiX my signature in presence of two witnesses.

vEDWlN F. PRICE.

Witnesses:

D. C. PARKER, Trios. C. KERK.

